仁爱版）英语七年级下册各单元知识点总复习二。
unit 5 topic1
重点语法一般现在时（常与频度副词never, seldom, sometimes, often,usually, always等连用）
重点句型 —how do you usually come to school?
—i usually come to school by subway.
—how often do you go to the library?
—once/twice/three times a week/very often/every day/sedom
重点详解。always come to school by bus.
by+交通工具名称，表示使用某种交通方式，中间不加限定词，如果交通工具前有a, the, my 等限定词，就不能用by,而是用in或是on.
on the train=by train on his bike=by bike in my car=by car.
巧辩异同 on foot 与 walk on foot “走路”，是介词短语，不能作谓语，只作方式状语，位于句末。walk “走路”,是动词，可以作谓语。
go to…on foot= walk to
i often go to school on foot. =i often walk to school.
go to….by bike = ride a bike to
go to…. by car = drive a car to
go to … by plane = fly to
go to… by bus = take a bus to
2 .come on! it’s time for class. come on “快点，加油，来吧”。
it’s time for sth. “该做某事了”，与 it’s time to do sth.意思一样。
3 .look的短语 look the same看起来一样 look like看起来像……
look for寻找 look after 照顾。
4 .do my homework at school 在学校做作业。
do one’s homework 做家庭作业（注意：one’s 要随主语的变化而变化，常用形容词性物主代词my, your, their, our, his, her等）。
5 we want to know about the school life of american students. 我们想了解一下美国学生的学校生活。
know about “了解，知道关于…”。
6 巧辩异同 a few与few a few “一些”，few“很少，几乎没有”，修饰可数名词。
a little与little a little“一些”，little“很少，几乎没有”，修饰不可数名词。
7 they often play basketball or soccer, go swimming and so on.
go swimming 去游泳 and so on “等等”，表示还有很多。
拓展 go+v.-ing 表示去做某事，类似的有： go fishing 去钓鱼 go shopping 去买东西 go boating 去划船 go skating 去滑冰。
8 how often do you go to the library? 你多久去一次图书馆？
how often“多久一次”，问频率。答语常用频度副词never, always,often等或单位时间内的次数once a week一周一次 twice a month每月两次three times a year每年三次
语法讲解一般现在时。
一般现在时表示：
（1）现在所处的状态。jane is at school.
（2）经常或习惯性的动作。i often go to school by bus.
（3）主语具备的性格和能力。he likes playing football.
（4）客观真理。the earth goes round the sun.
常用的时间状语：often, always, usually, sometimes, every day等等。
行为动词的一般现在时，助动词是do/don’t和does/doesn’t.当主语是第。
一、二人称和所有复数形式时，行为动词用原形。
肯定式：i go to school on foot. 否定式：i don’t go to school on foot.
疑问式：do you go to school on foot? —yes, i do. —no, i don’t.
当主语是第三人称单数时，动词用第三人称单数形式，在词尾加-s或-es。
肯定式：he goes to work by bus. 否定式：he doesn’t go to work by bus.
疑问式：does he go to work by bus? —yes, he does. —no, he doesn’t.
topic2
重点语法现在进行时态。
重点句型 what are you doing? he is cleaning the dormitory.
are you doing your homework? yes, i am./no, i am not.
how long can i keep them? two weeks.
重点详解。1 at the moment“此刻，现在”,相当于now.
2 巧辩异同 go to sleep与go to bed
① go to bed“**”“就寝”i often go to bed at ten.
② go to sleep“入睡”“睡着”last night i went to sleep at two o’clock.
3 巧辩异同some, a few 与a little “一些，有些”三者都修饰名词。
some既可以修饰可数名词又可以修饰不可数名词。
we want some apples and some water.
a few用在可数名词复数之前，a little用在不可数名词之前。
there are a few books and a little waterin the classroom.
4 与how相关的短语 how often多常 how many多少 how much多少钱 how old多大
5 and you must return them on time.你必须。
英语知识点。
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